Hi!
The draft contains a t=s flag, described like this:
s
: Any DKIM2 signature header fields using the "i=" tag MUST have
the same domain value on the right-hand side of the "@" in the
"i=" tag and the value of the "d=" tag. That is, the "i="
domain MUST NOT be a subdomain of "d=". Use of this flag is
RECOMMENDED unless subdomaining is required.
However, in the DKIM2 main draft, the i= tag means something completely
different, so this makes no sense at all? Can this paragraph be just
removed from the draft?
Hannah.
On 7/20/26 22:58, [email protected] wrote:
Internet-Draft draft-ietf-dkim-dkim2-dns-00.txt is now available. It is a work
item of the Domain Keys Identified Mail (DKIM) WG of the IETF.
Title: Domain Name Specification for DKIM2
Author: Wei Chuang
Name: draft-ietf-dkim-dkim2-dns-00.txt
Pages: 13
Dates: 2026-07-20
Abstract:
The updated DomainKeys Identified Mail (DKIM2) permits an
organization that owns the signing domain to claim some
responsibility for a message by associating the domain with the
message through a digital signature. This is done by publishing to
Domain Name Service (DNS) of the domain a public key that is then
associated to the domain and where messages can be signed by the
corresponding private key. Assertion of responsibility is validated
through a cryptographic signature and by querying the Signer’s domain
directly to retrieve the appropriate public key. This document
describes DKIM2 DNS record format and how to find the record.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-dkim-dkim2-dns/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-dkim-dkim2-dns-00.html
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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Hannah Stern
Software Developer
Mail Transfer Development
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